Home›Tributaries›McGaugh Slough
Survey SiteNo fish 2024-25

McGaugh Slough

South shore, between Manning & Adobe. No adults observed 2024-2025. Hill Creek joins upstream. Positioned between two active tributaries.

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Creek Conditions
Current Season Status
McGaugh Slough does not have a dedicated USGS streamflow gauge. Conditions are assessed through CDFW and Lake County WPD visual surveys and the lake-wide spawn phase indicator below.
Spawning Phase
Auto-calculated
Off
season
Post-spawn · next year builds now
Updates on page load
Clear Lake Level
USGS 11450000
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USGS lake level record ↗
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263-2344
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About This Creek

McGaugh Slough

No adults observed 2024-2025. Hill Creek joins upstream. Positioned between two active tributaries.

Enters the south shore. No adults observed in CDFW surveys 2024 to 2025.

McGaugh Slough is part of the Big Valley & south shore, one of several tributaries that drain this part of the watershed.

Key Data
CDFW 2024 to 2025None observed

One of Clear Lake's 27 documented tributaries. Detailed survey history and field photos are available for the priority spawning streams: Kelsey, Adobe, Burns Valley, and Forbes.

Field Photos

McGaugh Slough in the field

6 photos documenting survey reaches, barriers, fish observations, and seasonal conditions from Lake County Watershed Protection District community science monitoring.

Downstream Reach Mcgaugh Slough at Soda Bay Road — Downstream reach · 4/3/23
Monitoring site
Downstream Reach Mcgaugh Slough at Soda Bay RoadDownstream reach · 4/3/23
Mcgaugh Slough at Big Valley Road (now a — Upstream · 3/21/23
Monitoring site
Mcgaugh Slough at Big Valley Road (now aUpstream · 3/21/23
Upstream Reach Mcgaugh Slough Running Through… — Upstream reach · 3/28/23
Rescue
Upstream Reach Mcgaugh Slough Running Through…Upstream reach · 3/28/23
Mcgaugh Slough at Big Valley Road, Dry Creek… — Downstream · 4/24/26
Dry / low flow
Mcgaugh Slough at Big Valley Road, Dry Creek…Downstream · 4/24/26
Mcgaugh Slough at Big Valley Road, Dry Creek Bed — Upstream · 4/24/26
Dry / low flow
Mcgaugh Slough at Big Valley Road, Dry Creek BedUpstream · 4/24/26
Mcgaugh Slough at Big Valley Road, Dry Creek Bed — Upstream · 4/24/26
Dry / low flow
Mcgaugh Slough at Big Valley Road, Dry Creek BedUpstream · 4/24/26